Mitsubishi Galant. Manual — part 678

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-107

STEP 9. Check the harness wires between combination
meter connector C-29 and ignition switch (IG1).
NOTE: After checking junction block connectors C-73 and C-
78, check the wires. If junction block connectors C-73 and C-78
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Are the harness wires between combination meter

connector C-29 and ignition switch (IG1) in good
condition?
YES : There is no action to be taken.
NO : Repair or replace them. The seat belt warning light

should work normally.

STEP 10. Check combination meter connector C-29 and
ETACS-ECU connector C-82 for damage.
Q: Are combination meter connector C-29 and ETACS-ECU

connector C-82 in good condition?
YES : Go to Step 11.
NO : Repair or replace them. Refer to GROUP 00E,

Harness Connector Inspection

P.00E-2

. The seat

belt warning light should work normally.

AC003089 AD

CONNECTOR: C-29

AC003082 AM

CONNECTORS: C-73, C-78

C-73

C-78

JUNCTION BLOCK
(FRONT VIEW)

AC003089 AD

CONNECTOR: C-29

AC003082AC

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-82

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-108

STEP 11. Check the harness wire between combination
meter connector C-29 and ETACS-ECU connector C-82.
Q: Is the harness wire between combination meter

connector C-29 and ETACS-ECU connector C-82 in
good condition?
YES : There is no action to be taken.
NO : Repair it. The seat belt warning light should work

normally.

AC003089 AD

CONNECTOR: C-29

AC003082AC

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-82

SWS DIAGNOSIS

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-109

Inspection Procedure H-1: Ignition key hole illumination light : Ignition key hole illumination light
does not work normally.

Ignition Key Hole Illumination Light Circuit

AC004209

AC003089AE

CONNECTOR: C-57

AC003174 AB

CONNECTOR: C-59

COLUMN SWITCH

SWS DIAGNOSIS

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-110

CIRCUIT OPERATION
The ETACS-ECU illuminates the ignition key hole
illumination light when the ignition switch is turned to
"LOCK" (OFF) or "ACC" position and the driver's
door is opened. The ignition key hole illumination
light goes off 30 seconds after closing the drive's
door. Also, the ignition key hole illumination light
illuminates for 30 seconds after removing the ignition
key.

TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU illuminates the ignition key hole
illumination light according to the input signals from
the following switches:

•

Ignition switch (IG1)

•

Key reminder switch

•

Driver's door switch

If the ignition key hole illumination light does not
illuminate, the relevant input signal circuit, the key
reminder switch (Ignition key hole illumination light
bulb) or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS

•

Malfunction of the driver's door switch

•

Malfunction of the key reminder switch (Key
reminder switch or ignition key hole illumination
light bulb)

•

Malfunction of the ETACS-ECU

•

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:

•

MB991223: Test Harness Set

•

MB991502: Scan Tool (MUT-II)

•

MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Check method of the input signal

Q: Which is to be used, the scan tool or the voltmeter to

check the input signal?
Scan tool MB991502 : Go to Step 2.
Voltmeter : Go to Step 3.

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003082 AG

CONNECTORS: C-77, C-78

JUNCTION BLOCK
(FRONT VIEW)

C-77

C-78

AC003080AC

C-86

JUNCTION BLOCK
(REAR VIEW)

CONNECTORS: C-84, C-86

C-84